Generally, we use a bus to transport all the people that needed to go somewhere else. And as such, each one of them pays for the trip. They would want to get to where they want to be and nothing else. They don't want anything happening to them along the way as each of them got their own engagement going on. Every second is important since they need to get to their destination. Each one of them want to get there as fast as they can. Then again, it all rest in the arms of the driver of the bus, whether, he takes some short root or the hard way around, it is all up to him. Driving a truck could be dangerous as your life and your passenger's life could be lost if you are not careful enough. So too say, going to mountains, you would surely face so much danger as the slops are too dangerous. But, you can't say that to the passengers as they would surely be unorganized and panicked. All they care about is getting to their destination and nothing else matters. They don't think about their safety because it is the job of the driver to make sure that each of his passengers get to where they want to be without incurring any harm. In this game, there are no passengers to watch by, all you need to do is to focus on the game and get to the finish line as fast as you can. However, every game has its obstacles and in this game, you would need to get over cliffs. To do that, you need enough space to get that extra boost. You would need it all in this game. The game gets harder and more difficult as you make some progress.